LOS ANGELES — When Luke Walton told reporters on Wednesday that Julius Randle needs to “bully other teams” and the player who “pushes back a little bit,” it was nothing the Lakers power forward had not heard before.

“I talked to him about it multiple times,” Randle said Friday. “Just controlling what I can with energy and effort and hopefully guys follow.”

Randle secured just one rebound in 23 minutes in a 114-90 loss to the Thunder. He was a symbol of the Lakers’...